Shuttle lock for looms



Dec. 8, 1953 J. CHAPMAN, sR., ETAL 2,661,775

SHUTTLE LOCK FOR LOOMS Filed OCL. 13, 1950 l 2 Sheets-Sheet l l,4,9 f27(Q5 Z5 NVENTORS ATTORNEY Dec. 8, 1953 J. CHAPMAN, sR., ETAL 2,661,775.

SHUTTLE LOCK FOR LOOM-S Filed OCT.. 13, 1950 2 ,Sheets-Sheet 2 INVENTORSJmwfqamzx ATTORNEY Patented Dec. 8, 1953 joNlTED STATES PATENT OFFICESHUTTLE LOCK FOR LOOMS James Chapman', Sr., and Roger Nixon Reynolds,Sr., Atlanta, Ga.

. App-Imation october 1s, 1950seria1No. 190,034.Vv V5 claims.' (c1. 13s-187) Our invention relates to' shuttle Vlocks f for looms, and it is anobject of the same to provide means for locking a shuttle in its box atthe end of its stroke across the lay and to prevent rebounding of theshuttle, which means is controlled by the movement of the shuttleitself.

Other objects are to provide a shuttle locking means that is positiveand certain in action and simple in construction, which is so durableYthat it will wear as long as other parts ofthe loom, and which willrelease the shuttle completely before the picker strikes it in aVpickingoperation.

Referring to the annexed drawings, which are made a part of thisapplication and in which similar reference characters indicate likeparts.:

Fig. 1 is across sectional View of so much of a loom as will illustratea shuttle and parts cooperating therewith for the purposes ofcurinvention, only one end of the lay and cooperating parts being shownand it being understood that certain parts are duplicated at the otherside of the loom, Y l

Fig. 2, a top plan ofthe same,

Fig. 3, a section lengthwise of the loom, on line 3-3 of Fig. 1,

Fig. 4, a View similar to Fig. 1, but showing the parts in anotherposition,

Fig. 5, aplan of, parts shown in Fig. 4.

Fig. 6, a longitudinal section on line 6-6 Vof Fig. 4, and

Fig. '7, a detail of parts shown in other figures.

VIn the drawings, reference character 2Dl indicates the crankshaftofa-loom, which crankshaft is connected by a pitman 2| at each end. kofthe loom to brackets 22 on the lay sole 23,/ that is supported on layswords 24. A shuttle 25 moves in a race on the lay sole, from one to theother of two shuttle boxesat the ends of the lay, the shuttle beingimpelled by a picker stick 26 with a picker 21 at its upper end. Theshuttle boxes comprise upstanding front members 28 and rear binders 29that are moved by springs 30 and protection springs (not shown) aboutpivots 3l to arrest the shuttle and hold it in place in a box. All theparts so far described are of conventional character as commonly used inlooms.

The device of our invention comprises a swivel stand 32 that is aixedtothe lay by bolts 33, said stand carrying what We call a swivel 34which is a lever of the first class and is mounted on a pivot 35 foroscillatory motion in a plane extending lengthwise of the loom, saidlever 34 being biased toward the position shown in Fig. 6 by a spring34. A bunter 36 is secured to the y f 2 pitman 2| by a bolt or screw 3l,said bunter comprising an arm extending alongside thepitman andpreferably being adjustable along the pitman to vary the time at whichit acts during the beat up of the lay. The swivelA has a laterallyextending finger 38 which extends into the path of movement of the innerend of the binder 23, so vthat it presses the binder toward the shuttlewhen free to act, the spring 34 serving as binder pressing meansauxiliary'to binder spring 30 and protection rod spring. Y A latch 39 isformed onor attached to the righthand end of a rod 40V that is' mountedto slide in a bore provided in a casting'4l secured to the lay, said rodbeing biased for endwise movement toward the swivel by means of a coilspring 42 encircling the rod and bearing at opposite ends against part4I and an abutment 43 adjustably secured to the rod by a setscrew 44,said spring tending to move the parts into the position of Fig. l, Wherethe latch is positioned back of the swivel and prevents the swivel frombeing tilted byv spring 34 toward the Vposition for engagement of itsarm 38 with the binder. Near the lefthand end of the rod 40 a block 46is adjustably secured to the rod by a setscrew 41, said block carrying apin 43 on which is mounted an abutment in the form of a roller 49 thatlies in the path of the picker stick. The rod 40 is bent rearwardly toprovide a part a lying underneath the lay, then upward to provide avertical part b, then laterally to form an arm c, and a hook-like bendat its free end to bear against the frontface of finger 38. In theoperation of our device, let it be assumed that the parts are in theposition of Fig. 1, wherein the box at the right is empty, the shuttle'moving toward the left as indicated by the arrow. The latches are heldbehind the swivels, by the action of springs 42, and therefore they holdthe swivels away from the binders. The left hand picker stick is spacedsomewhat from the limit of its leftward movement, and the box at theleft is empty, to receive the approaching shuttle. When the shuttle nowstrikes the picker stick, or other movable part adapted to operate rod40, the stick is moved to the left by the impact of the shuttle, as itgoes home in the shuttle box, the stick contacting with roller 49 andpulling the rod 40 to the left against the action of spring 42sufficiently to Iwithdraw the latch from swivel 34 and so to release theswivel 34 as the shuttle reaches home position. As soon as the shuttlecontacts with the binder it begins to be retarded, as usual, but

other end of the lay is empty and subject onlin to the tension of itsbinder spring.

As the crankshaft turns in the directionbf the arrow in Figs. 3 and 6 itpasses front center and i approaches top center in preparation for'thneiit pick to the left, and at about l5"` before it reaches topcenter the bunter on the pitman rod engages the lower end of the swiveland moves itfi'o'the position of Fig, G toward that o f Fig. 3 away fromtrie binder. As the crankshaft reaches topfceii'tei the shuttle Fi'spicked ot -off tlfe loose :the hunters new holding the swivels 'at both@aids fof the Ilay so as to remove tension of the biniifer's' from theboxes and both latches `rbving -ir'ito position underneathtlieirswivels.

the crankshaft passes back 'center the hunters J'pass away from theswivel-s, but the latches hold them fand lso maintain the binders inidii-positic-whi`1athe -shiittie compiete's its travel on this jpick.Wheat-he crankshaft rea-ches bttdmcenter or nearly 'so theshuttle'reaches home Av'ariel `pulls the latch from under theswivelbrits. engagement .Witlith lifhad picker stick, aridtheispriiigsf'snangi-sj etanche wires-pend'-inig'pickerjto-siiap'iriibiiicerinmiicking-bosaien.

It win bejaht/ions to tnoseski-ued in -tiieart that 'many 'changes 'maybefirade in the mecha-- ni'sms herein 4disci ed and in their dmode 4'pr-operation, an without departing from thsiiirii lof are invention; andtherefore wedofno-t-1iihivourselves "to what i's "shown thedrafwings'and iescribedin the spcification, but omy'as indifcatedin trieappendeq'ciaiins, i Having funyiscfiea-'our'-iriveritin, weciaimis: v

1 .II` i a loom, a lay, a crankshaft, a ptman cijniietiiig 'the ray "totriecrariksriaft, a 55X 0n 'the lay .Spng-Tpidlsllittl Irbll'i and apick'r stick, the 'ccmbmaticn'therfewthpf a :swivel stanti im nieflay, aIeveijen the st-ana, `said lever 'being 'pivot or movemiitj in aspirineiiteridinjg lengthwise ie '10cm *aangaf-erf; tending laterally from saii'ie rito the path 'of movement"fsaidtindr, esiiient @aus mei/ igfsaidlever to Aforce said finger binder, 'a bunter im tue'pitman fr movingsaid lever into idle position, a latch for holding said lever in suchidle position, and means actuated by a shuttle at the end of its ilightfor releasing said latch.

2. In a loom, a lay, a crankshaft, a pitman connecting the lay to thecrankshaft, a shuttle box on the lay, a spring-pressed shuttle binder,and a .picker stick, the combination therewith of "a'levr pivtedl on thelafyfto'iswingro horizontal aiis, said 'lever having ansboveand Belowsaid Lairis, resilient means biasing the lever to force its upper armagainst the binder to augment the action 'of the binder on a shuttle, abunter on the pitman for pressing against the lower arm of .the lever'to 'ln''ve its upper arm away from said binder, a latch, and means formoving the latch intofthe'nath of the-upper arm during such action ofthebunter.

and an abutment on the v'ia-'tch"i'oii *forr engagement by the pickerstick to withdraw the latch rodfifom the-path ot sai-d upper-arm.

v5.111 a ioo lay, fa crankshaft, a piilnaii connecting the v'lay toA'the rakshaf-t, a l'e'vepivote'jdon the lay toh swing ma'pflaneextending lengthwise bttheloin, arrhsnthe lever eiitending upward "and'downward ffrom ivits pivot, r'esilient Ifneansbiasing JAthe upperarinfc' "the lever toward the bagder, an abutiiirit -cn the pit-manfo'riactingbh low'er-'arn =of the leverftoi'nove its upper arm away fromthe binder, a latch, and means for moving thelatchintolthepath:of-:saidupper arm' during-such y"actior'iottima bu-liter.

JAMES CHAPMAN, SL i ROGER NiXoN'REYNoDs "sa

